Adding fiber filler is a classic strategy for plastic reinforcement, which is well worth applying to Digital Light Processing (DLP) 3D printing technology. Herein, this study evaluated the application of micro-size poly(p-benzoyl-p-phenylenediamine) (Kevlar) fiber in resin for stereolithography. The mixture of Kevlar fiber and resin has an acceptable viscosity. In the mentioned process, the resin was solidified by the projector beam (405 nm) in the Z-axis direction layer by layer. The results showed that the object could still be printed after the content of Kevlar reached 7 wt%. After UV light irradiation and thermal curing, the strength and Young's modulus of the composite are 1.79 times and 11.2 times higher than those of the pure resin. The wear resistance of the composite material is improved. In the single-layer exposure test, the addition of Kevlar makes the resin have a better resolution. Compared with other strategies using Kevlar fiber, it is shown that Kevlar fiber has potential application prospects in DLP 3D printing.

添加纤维填充剂是增强塑料的经典策略，这非常值得应用于数字光处理（DLP）3D打印技术。在此，本研究评估了微尺寸聚对苯二甲酰基对苯二胺（Kevlar）纤维在用于立体光刻的树脂中的应用。凯夫拉尔纤维和树脂的混合物具有可接受的粘度。在上述过程中，树脂被投射器光束（405nm）在Z轴方向上逐层固化。结果表明，当凯夫拉尔含量达到7 wt％时，仍然可以打印该对象。经过紫外线照射和热固化后，复合材料的强度和杨氏模量分别比纯树脂高1.79倍和11.2倍。复合材料的耐磨性得到改善。在单层曝光测试中，凯夫拉尔的加入使树脂具有更好的分辨率。与使用凯夫拉尔纤维的其他策略相比，凯夫拉尔纤维在DLP 3D打印中具有潜在的应用前景。